Vortex RWG20F15 User manual

Category
Measuring, testing & control
Type
User manual
Vortex Flow Meters
RWG/RWBG Wafer Style Flow Meters
RNG Insertion Style Flow Meters
VRX-UM-00374-EN-06 (June 2018)
FLOW
Flow
Flow
User Manual
Vortex Flow Meters, RWG/RWBG Wafer Style Flow Meters & RNG Insertion Style Flow Meters
VRX-UM-00374-EN-06Page 2 June 2018
User Manual
VRX-UM-00374-EN-06 Page 3 June 2018
CONTENTS
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Flow Ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Velocity Ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Straight-Run Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RWG/RWBG Wafer Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
RNG Insertion Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Hot Tap Insertion Flow Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
EMC Notication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Instructions Specic to Hazardous Area Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Current Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
HART Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Additional Installation Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Turbulence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Swirl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sonic Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Velocity Prole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Flow Proling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reducing the Pipe Diameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Vortex Flow Meters, RWG/RWBG Wafer Style Flow Meters & RNG Insertion Style Flow Meters
VRX-UM-00374-EN-06Page iv June 2018
Introduction
Page 5 June 2018 VRX-UM-00374-EN-06
INTRODUCTION
The RNG/RWG/RWBG series vortex shedding flow meter family is designed to provide accurate and repeatable gas flow
measurement. These meters employ a patented ultrasonic technique to measure a form of turbulence created in the flow
stream. This turbulence, known as the Von Karman Vortex Street, is related to the flow through the pipe.
The RNG/RWG/RWBG series flow meter is a microprocessor based device, with HART compatible communications. The
primary output of the meter is a 2 wire, 4…20 milliampere (mA) current which is proportional to the flow.
With HART communications, users have the capability to remotely configure the meter. Typical operations, like re-scaling the
analog output, can be performed in comfort using a standard PC or HART 275/375/475 Communicator.
The wafer style meters are for pipe diameters four inches or less, and are installed between 150 lb flanges, or are
manufactured with pipe extensions and 150 lb flanges welded on the ends. These meters are calibrated in volumetric flow
units, that is Actual Cubic Feet per Minute (ACFM). Flow rates for the wafer style meters are listed in Table 2 .
The insertion style meters are retractable meters that are installed through the walls of a pipe or duct larger than four inches.
These meters can be installed through a 2 in. full port valve, which permits the unit to be retracted or inserted manually
without shutting down the system. Flow rates for the Insertion style meters are shown in Table 3.
DANGER
CAUTION SHOULD BE USED WHEN INSERTING OR RETRACTING AT PRESSURES EXCEEDING 60 PSIG (4.14 BARG).
SPECIFICATIONS
Wafer Insertion
Mounting Requirements Mounts between two 150 lb. flanges Options for 2 in. NPT, 2 in. 150# Flange, 2 in. 300# Flange, DN50 Flange
Operating Pressure –5…250 psig (–0.34 …17 barg)
Operating Temperature –20…300° F (–28…150° C)
Ambient Temperature –20…155° F (–28…68° C)
Accuracy ±1% of Reading over the upper 90% of the flow range
Repeatability 0.5% of reading
Input Power 28V DC Maximum
Output 4…20 mA (2 wire)
Table 1: Specifications
Flow Ranges
Gas / Air Application
Flow Ranges for RWG / RWBG Series
Model
Pipe Size
in. (mm)
Flow ACFM (m³/hr)
Minimum Maximum
RWG05 0.5 (13) 0.4 (0.7) 16 (27)
RWG10 1 (25) 1.2 (2.0) 45 (77)
RWG15 1.5 (38) 2.0 (3.4) 100 (170)
RWG20 2 (50) 5.0 (8.5) 200 (340)
RWG30 3 (76) 10.0 (17.0) 400 (680)
RWG40 4 (102) 20.0 (34.0) 600 (1019)
Table 2: Flow Ranges for RWG / RWBG Series
Velocity Ranges
Gas / Air Application
Velocity Range for RNG Series
Model
Pipe Size
in. (mm)
Velocity fps (mps)
Minimum Maximum
RNG
4 (102)
2 (0.6) 140 (43)
6 (152)
8 (203)
10 (254)
Table 3: Velocity Ranges for RNG Series
Flow measured in feet / second @ 14.69 psia, 60° F (meter / second
@ 1.013 bar, 16° C)
Installation
Page 6 June 2018VRX-UM-00374-EN-06
INSTALLATION
The flow meter is shipped completely assembled, tested and ready to install in its permanent location. See Figure 2 on page
7 through Figure 5 on page 9 for the applicable outline dimensions for specific meters.
Straight-Run Piping Considerations
The sensor should be installed with 20 diameters, or more, of straight, unobstructed, full area pipe upstream of the flow meter
installation and 10 diameters, or more, downstream. This condition provides the fully developed, symmetrical flow profile that
is necessary to obtain accurate and repeatable results. The first obstruction up and downstream should be a full area elbow. If
the minimum straight run is not possible, the general rule is to have 80% of the straight run upstream and 20% downstream
from the flow meter installation.
High intensity ultrasonic noises should not be located upstream or downstream from the sensor. Common ultrasonic noise
sources include the following:
Slightly cracked valves operating with large pressure drops.
Small pipe leaks in high pressure systems.
Venturies operating at near-sonic flow rates.
Sonic nozzles.
If these ultrasonic noise sources cannot be eliminated, the meter should be mounted with at least one elbow between the
flow meter and the noise source.
Installation Location
The RNG/RWG/RWBG series meters uses ultrasonics to measure flow. An ultrasonic noise can interfere with this technique,
therefore high intensity, ultrasonic noise sources should not be located upstream or downstream from the meter. Common
mechanical ultrasonic noise sources include the following:
Slightly cracked valves operating with large pressure drops.
Small pipe leaks in high pressure systems.
Venturies operating at near-sonic flow rates.
Sonic nozzles.
If these ultrasonic noise sources cannot be eliminated, the meter should be mounted with at least one elbow between the
flow meter and the noise source.
Temperature and Pressure Tap Locations
User supplied pressure and temperature sensors should be mounted downstream from the flow meter. The pressure sensor
should be approximately 3 to 5 pipe diameters and the temperature sensor approximately 4 to 8 pipe diameters downstream.
Mechanical Installation
The meter should be installed with at least 20 pipe diameters of straight pipe upstream and 10 pipe diameters downstream.
This condition provides the fully developed, symmetrical flow profile that is necessary to obtain accurate and repeatable
results. Shorter upstream/downstream piping may be used although a shift in calibration may occur. If severe turbulence or
distorted flow profiles are present, flow straighteners should be used. See Additional Installation Requirements” on page 17
for additional information.
Installation
Page 7 June 2018 VRX-UM-00374-EN-06
RWG/RWBG Wafer Meter Installation
The labeling of the flow direction on the meter should be aligned with the flow in the pipe. If liquids or condensate can be
present in the flow, the meter should be installed so that liquids will not accumulate on the ultrasonic transducers (the small
buttons on either side of the vortex strut).
The RWG/RWBG series wafer meters are designed to mount between two ANSI 150 lb flanges. The meter should be mounted
so its inside diameter is centered inside the pipe. See Figure 1.
OTE:N Gaskets (not provided) are necessary between the sensor and the ANSI flanges. Ensure that these gaskets are
properly installed and do not protrude into the flow stream.
The RWGxxF series flanged meters are designed to mount between two ANSI 150 lb flanges. See Figure 4 on page 8.
OTE:N Gaskets (not provided) are necessary between the ANSI flanges. Insure that these gaskets are properly installed and
do not protrude into the flow stream.
AVOID BENDING THE VORTEX STRUT OR DAMAGING THE TRANSDUCERS DURING INSTALLATION. DO NOT REMOVE
COVER PLATES WHILE UNIT IS OPERATING.
Flow Flow
CORRECT
(Meter Centered In Pipe)
INCORRECT
(Meter Not Centered In Pipe)
Figure 1: Wafer position in the piping
Flow
Flow
4.38"
+.12
C
-.00
5.75
Cable Entry
Accommodates
.19/.25 Dia Cable
3/4 -14 NPT Connector
2.25.06 .06
E Dia
Both Sides
A Dia
B Dia
.531 Dia 4 Holes
Spaced at 90° on
D Dia BC
4.50
3/4-14 NPT
Pipe Plug
Figure 2: 1/2 in., 1 in. and 1-1/2 in. meters
Model
Diameter A
in. (mm)
Diameter B
in. (mm)
Dimension C
in. (mm)
Dimension D
in. (mm)
Dimension E
in. (mm)
RWG/RWBG05 3.50 (89) 0.50 (13) 5.60 (142) 2.38 (61) 1.38 (35)
RWG/RWBG10 3.97 (101) 0.88 (22) 5.78 (147) 3.12 (79) 2.00 (51)
RWG/RWBG15 4.72 (120) 1.38 (35) 6.34 (161) 3.88 (99) 2.88 (73)
Installation
Page 8 June 2018VRX-UM-00374-EN-06
Flow
Flow
+.12
C
-.00
2.25.06 .06
4.38"
5.75
Cable Entry
Accommodates
.19/.25 Dia Cable
3/4 -14 NPT Connector
D Dia
Both Sides
A Dia
B Dia
4.50
3/4-14 NPT
Pipe Plug
Figure 3: 2 in., 3 in. and 4 in. meters
Model
Diameter A
in. (mm)
Diameter B
in. (mm)
Dimension C
in. (mm)
Dimension D
in. (mm)
RWG/RWBG20 3.97 (101) 1.75 (45) 5.92 (150) 3.15 (80)
RWG/RWBG30 5.22 (133) 2.75 (70) 6.62 (168) 4.55 (116)
RWG/RWBG40 6.87 (174) 3.75 (95) 7.52 (191) 6.19 (157)
5.75
A
SENSOR S.N.: 64
PRESSURE SENSOR:
OUTPUT: 4 - 20 mA
HEDLAND
by
4.69"
FLOW
FLOW
B
4.50
3/4-14 NPT
Pipe Plug
Figure 4: Outline dimensions for flanged series meters
Model Size
Dimension B
in. (mm)
Dimension A
in. (mm)
RWG05F15* 1/2 in. 9.88…10.00 (250…254) 5.60 (142)
RWG10F15* 1 in. 9.88…10.00 (250…254) 5.78 (147)
RWG15F15* 1-12 in. 9.88…10.00 (250…254) 6.34 (161)
RWG20F15* 2 in. 9.88…10.00 (250…254) 5.92 (150)
RWG30F15* 3 in. 11.88…12.00 (301…304) 6.62 (168)
RWG40F15* 4 in. 11.88…12.00 (301…304) 7.52 (191)
*150 lb RF ANSI Flange
Installation
Page 9 June 2018 VRX-UM-00374-EN-06
RNG Insertion Meter Installation
The RNG series insertion meters are designed to mount on a standard ANSI 150 lb, 2 in. pipe flange. If the main line can be
depressurized easily, then a simple installation consisting of a 2 in. nozzle and a 2 in. ANSI 150 Class flange may be used. This
permits the shortest shaft length which minimizes the clearance space. The measuring window should be installed in the
center of the line for line sizes 12 in. or less (see Figure 5 on page 9). For line sizes larger than 12 in., the measuring window
should be installed 25% to 50% of the way into the pipe. It is recommended that the internal dimensions of the line be
measured for accurate readings.
Insertion meters can be used in any size pipe four inches and larger in diameter. In order to calculate accurate volumetric,
mass, and standard flow measurements, it is recommended to enter the exact pipe size into the meter. Normally this
operation, along with overall meter configuration, is performed at the factory. However, the user can enter the pipe diameter
on site using the Badger Meter HART Interface or a HART 275/375/475 communicator.
OTE:N The torque requirement for the Conax fitting is 90…100 ft-lb. See Figure 5 on page 9. See Additional Installation
Requirements” on page 17 for additional installation information and flow profiling.
5.75
4.38"
13.0" Maximum at
Maximum Insertion
C Maximum
Retracted
4.50"
Maximum
B Maximum
Insertion
4.50" Maximum
Retracted
FLOW
.75"
FLOW
4.50
3/4-14 NPT
Pipe Plug
A
Measuring
Window
Figure 5: Outline dimensions for RNG insertion meters
Model
Dimension A
in. (mm)
Dimension B
in. (mm)
Dimension C
in. (mm)
RNG12 12.00 (305) 12.88 (327) 21.50 (546)
RNG24 24.00 (609) 24.88 (632) 33.50 (851)
RNG36 36.00 (914) 36.88 (937) 45.50 (1156)
RNG48 48.00 (1218) 48.88 (1242) 57.50 (1461)
RNG60 60.00 (1524) 60.88 (1546) 69.50 (1765)
Installation
Page 10 June 2018VRX-UM-00374-EN-06
Hot Tap Insertion Flow Meter Installation
Where de-pressurizing the line for flow meter maintenance is impossible or undesirable, the “hot tap method of installation
is used. This method involves inserting the flow meter through a 2 in. (51 mm) spool piece and a 2 in. (51 mm) full port valve
and will require a longer shaft length as well as greater clearance space for removal and installation.
DANGER
CAUTION SHOULD BE USED WHEN INSERTING OR RETRACTING AT PRESSURES EXCEEDING 60 PSIG (4.14 BARG).
Figure 6 shows a sample hot tap installation. With the exception of the spool piece, which must be a minimum of
4.5 in. (114.3 mm), all of the dimensions are suggestions only. Actual dimensions may vary depending on customer’s own hot
tap configuration.
To calculate the required insertion flow meters stem length:
For pipe diameters less than or equal to 24 in. (609 mm): Calculate the distance from the center line of the pipe to the top
of the flow meter mounting flange.
For pipe diameters greater than 24 in. (609 mm): Calculate the distance from the top of the flow meter flange to a point
1/4 of the pipe diameter into the pipe.
When flow profiling is required, calculate the distance from the bottom of the pipe to the top of the flow meter mounting
flange and subtract 2 in. (51 mm). Next round this distance up to the next largest 12 in. (305 mm) increment. This is the stem
length that should be ordered.
13.05" Maximum at
Maximum Insertion
FLOW
4.50" Maximum
Retracted
Standard ANSI
2 Inch 150 Lb. Flange
Determined
By Stem
Length
Determined
By Stem
Length
2" Full Port
Valve
Flow
4.50"
Maximum
Spool Piece
4.50" Minimum
5.75
Cable Entry
Accommodates
.19/.25 Dia Cable
3/4 -14 NPT Connector
4.38"
Figure 6: Hot tap configuration for RNG insertion gas meters
DANGER
USE CAUTION WHEN INSERTING OR RETRACTING AT PRESSURES EXCEEDING 60 PSIG (4.14 BARG).
Electrical Installation
Page 11 June 2018 VRX-UM-00374-EN-06
ELECTRICAL INSTALLATION
Electrical connections for the meter are made using screw terminals located inside the enclosure. To access these terminals,
remove the lid from the enclosure. The functions of these terminals are illustrated in Figure 7.
To install the cable, route it through the cable entry located on either side of the enclosure and attach the wires to the
appropriate terminals.
EMC NOTIFICATION
The ultrasonic sensing technology employes a 160 kHz carrier frequency and the flow meter is sensitive to radiated and
conducted noise at or near this frequency. Precautions must be taken not to subject the flow meter or associated cabling
to sources of RF noise that could interfere with the ultrasonic carrier. Any such interference can cause degradation in flow
meter performance.
Chassis
Ground
Cable Shield
Ground
+
4-20MA
-
EP RTN
EP PWR
EP OUT
EP IN
NC
Figure 7: Flow meter terminal functions
Terminal
Designator
Function
4-20 mA + Loop Power (+28 VDC maximum)
4-20 mA – Loop Power (–)
NC Not Used
EP RTN Pressure Sensor Power Supply Return
EP PWR Pressure Sensor Power
EP OUT Power Out to Pressure Sensor
EP IN Pressure Sensor Input
The vortex meter is available in two versions: CE or intrinsically safe for hazardous areas. A display is not available with the
intrinsically safe meter. The nameplate specifies the certifications that apply to the meter. Te electrical installation instructions
for both types of meters are the same, except the intrinsically safe meter has special consideration specified in this user
manual and in the control drawing accompanying the meter. The CE version is shown below.
Instructions Specic to Hazardous Area Installations
Page 12 June 2018VRX-UM-00374-EN-06
INSTRUCTIONS SPECIFIC TO HAZARDOUS AREA INSTALLATIONS
See the European ATEX Directive 94/9/EC, ANNEX II, 1.0.6 and the Vortex Intrinsically Safe Flow Meters Control Drawing for
RWG, RWBG and RNG Meters (shipped with the product; also available at badgermeter.com).
The following instructions apply to equipment covered by certificate number SIRA 03ATEX2543.
The certification marking is as follows:
1. The equipment may be used in zones 1 and 2 only with ammable gases and vapors with apparatus groups IIA and IIB and
with temperature classes T1, T2, T3 and T4. It is not suitable for zones where IIC gases or vapors may be present.
2. The equipment is only certied for use in ambient temperatures in the range –40° F (–40° C) to +176° F (+80° C) and should
not be used outside this range.
3. The equipment has not been assessed as a safety related device (as referred to by Directive 94/9/EC ANNEX II, Clause 1.5).
4. Installation, inspection and maintenance of this equipment shall be carried out by suitably trained personnel in
accordance with the manufacturers instructions and the applicable codes of practice (e.g., EN 60079-14 and EN 60079-17
in Europe).
5. Only spare parts supplied by Badger Meter may be used and installed in accordance with Badger Meter instructions.
WIRING
A two conductor foil shielded cable made of 14…22 AWG solid or stranded wire is required to make connections to the flow
meter (for example, Consolidated Wire P/N 5573-CL).
The shield is required to be attached to one of the shield ground points as illustrated in Figure 7 on page 11. The other end
of the shield should not be grounded.
When using the Zener Diode Barrier the maximum load resistance for the power depends on the supply voltage (see Figure 8
on page 14).
If a Barrier/Isolator is being installed, refer to the Barrier/Isolator manufacturers data sheet for maximum resistive loading on
the output. (Excitation voltage input to meter must be 15V DC minimum when output is at 20 mA)
The flow meter requires a minimum of 15V DC at the meter’s 4…20 mA (+) and (–) terminals to operate. With all loop loads
installed in the loop, the voltage at the meter must be at least 15V DC or the meter will operate erratically if at all. The
maximum load resistance for the meter depends on the supply voltage. The higher the supply voltage the greater the loop
load the meter will support.
The current sense resistor used in HART communications should be installed only for setup or troubleshooting as the current
sense resistor is an unnecessary loop load when the meter is operating under normal conditions.
OTE:N Current loops with large loads may work satisfactorily at low loop current outputs but cease to function as the output
current increases. The reason for this is that as the current increases the voltage drop across the sum of the loop loads
will increase in direct proportion to the current output. At some current output unique to that particular loop the
voltage drop across the sum of the loop loads will leave less than the minimum 15V DC required at the meters input
terminals.
If this occurs, the loop load must be reduced enough so that—at the maximum current output for the system—the
voltage at the meter’s power input terminals remains at least 15V DC
The external pressure sensor is limited to a 5 foot (1.5 meter) cable length.
Operation
Page 13 June 2018 VRX-UM-00374-EN-06
Various wiring configurations are shown in Figure 8 on page 14 and Figure 9 on page 15.
OPERATION
Power Terminals
The 4…20 mA terminals (+ and –) are used for the flow meter’s power supply.
Current Output
The current output is accessed through the 4…20 mA + and – terminal loop and provides an output current proportional to
the flow measured by the meter. This output is a standard 4…20 mA output, where 4 mA corresponds to no flow and
20 mA indicates 100 percent (full scale) flow. The current output will not be accurate if the load resistance on the current
output terminal is too high.
Load Table for Flow Indicator or Control System Using
Zener Diode Barrier
Power Supply Voltage 24 V 26 V
Maximum Voltage Drop 3 V 5 V
Maximum Resistances 136 Ω 225 Ω
For Loads Greater Than 225 Ω, see Optional Wiring Diagram
Figure D - Load TABLE
Table 4: Load table
Barriers and Barrier Isolator Examples
Stahl 9001/01-280-100-101 Zener Barrier
Turck MK33-221-Ex0-HL/24V DC (2 Channel)
Turck MK33-111-Ex-HLi/24V DC (1 Channel)
Table 5: Barriers and isolator examples
HART Communication
The vortex meter has the capability of HART Communication. However, it is not required that it be used. In most cases, the
meter is configured at the factory per the customer’s specifications. The user need only install the meter and connect power.
If HART Communication is desired a current sense resistor must be placed in series within the current loop.
The value of the resistor can range from 170…600 Ω and be rated at 0.25 watt or larger. The placement of the resistor is
illustrated in the wiring diagrams. The resistor will add to the total loop resistance and will raise the value of the required
power supply voltage if it remains in the loop.
There are two ways to communicate to the meter via the HART interface: the Badger Meter HART Interface or a
HART Communicator. The Badger Meter HART Interface is a PC-based software program that runs on Windows® 98,
Windows NT, Windows ME, Windows XP, Windows Vista® and Windows 7 operating systems.
The HART 275/375/475 Communicator is a handheld device that can communicate with any HART device that is registered
with the HART Communication Foundation. The HART 275/375/475 Communicator also provides access to all settings that
can be configured by the user. The 275 provides a menu driven interface. See Figure 10 on page 16 to view the menu map
for the HART 275 Communicator.
OTE:N HART 275 Communicator requires Badger Meter drivers for proper communications. (See communicator owner’s
manual for driver listing).
Wiring Diagrams
Page 14 June 2018VRX-UM-00374-EN-06
WIRING DIAGRAMS
The wiring diagrams illustrated below are for installations where no 4…20 mA pressure sensor is used.
Optional wiring diagram for loads > 225Ω
Figure 8: Without 4…20 mA output pressure transducer
Wiring Diagrams
Page 15 June 2018 VRX-UM-00374-EN-06
If an analog pressure gauge is used, it must be wired as shown below to avoid inadvertent current paths.
A single supply can be used to power the flow meter and the external pressure sensor. The 4…20 mA flow indication must be
taken from the source side of the loop.
Optional wiring diagram for loads > 225Ω
Figure 9: With 4…20 mA output pressure transducer
Wiring Diagrams
Page 16 June 2018VRX-UM-00374-EN-06
DEVICE SETUP
PV
AO
LRV
URV
Edit Mode
On / Off
Enable / Disable
Edit Mode
1
2
3
4
5
6
7
PROCESS
VARIABLES
1 VIEW FIELD
DEVICE
VARIABLES
1
TOTALIZER
CONTROL
2
TEST / STATUS
LOOP TEST
REVISION
NUMBERS
Flow
Profiling
(Method)
VOLTAGE
LEVELS
PRODUCT
INFORMATION
DEBUG
INFORMATION
1
2
3
4
5
6
7
DIAGNOSTICS
AND SERVICE
2
BASIC SETUP3 Tag
PV TYPE
& UNIT
1
2
RANGE VALUE3
STANDARD
CONDITIONS
PV Damping
Pipe ID
4
5
6
DETAILED
SETUP
4
REVIEW5
FLUID
PROPERTIES
Alarm Selection
Low Flow Cutoff
5
6
7
TEMPERATURE
SETUP
1
PRESSURE
SETUP
2
CONFIGURE
OUTPUTS
3
DEVICE INFO4
PASSWORD
PROTECTION
8
Process Variable
Analog Output
Percent of Range
Vortex Frequency
Process Temperature
Precess Pressure
1
2
3
4
5
6
PRESSURE SOURCE
Pressure Unit
User Specified Pressure Value
Pressure LRV
Pressure URV
Atmospheric Pressure
1
2
3
4
5
6
Manufacturer
Descriptor
Message
Date
Device ID
Write Protect
1
2
3
4
5
6
Total
Start / Stop
Reset
1
2
3
TEMPERATURE SOURCE
Temperature Unit
User Specified Temperatur Value
1
2
3
Protection On / Off
Enable / Disable Protection
Forgot Password?
1
2
3
PULSE OUTPUT
HART OUTPUT
LOCAL DISPLAY
1
2
3
View Status
Self Test
1
2
Fixed Current
D/A Trim
1
2
AGC Voltage
APP Voltage
ADC Voltage
UPP Voltage
1
2
3
4
PV Type
SELECT PV TYPE
PV Unit
SELECT PV UNIT
1
2
3
4
Base Temperature
Base Pressure
1
2
Process Density
Process Viscosity
Standard Density
PROPERTY SOURCE
User Specified Density Value
User Specified Viscosity Value
Property Table Name
Property Table Version Number
1
2
3
4
5
6
7
8
URV
LRV
Min Span
USL
LSL
1
2
3
4
5
Select from a
dynamic list
of units
Process Variable
Analog Output
Totalizer
Process Temperature
Process Pressure
Alternating PV & Totalizer
1
2
3
4
5
6
PULSE MODE
User Specified Frequency
Frequency URV
1
2
3
Property Table
User Specified Properties
Steam Table
1
2
3
Integrated RTD
External RTD
User Specified Temperature
Steam Table
1
2
3
4
Analog Input - Absolute
Analog Input - Gauge
User Specified Pressure
Steam Table
1
2
3
4
Polling Address
Number of Preambles
Burst Mode
Burst Command
1
2
3
4
MASS FLOW
VOLUME FLOW
STANDARD FLOW
PROCESS TEMPERATURE
PROCESS PRESSURE
Vortex Frequnecy
1
2
3
4
5
6
Universal Cmd Revision
Specific Cmd Revision
PV Unit
Select PV Unit
1
2
3
4
Model Number
Part Number
Meter Style
Sensor Option
Display Option
Model Deviation
Modification Date
Strut Size
Calibration Date
1
2
3
4
5
6
7
8
9
MPPS
Rynolds
Strouhal
WDRS
MTE
MPE
FCE
LXP
FCF
DCF
CSP
CFV
CSC
1
2
3
4
5
6
7
8
9
10
11
12
13
UDC Voltage
VCC Voltage
Loop Voltage
5
6
7
Scaled PV
Fixed Frequency
Vortex Frequency
Off
1
2
3
4
Figure 10: HART communicator menu tree v4.0
Troubleshooting
Page 17 June 2018 VRX-UM-00374-EN-06
TROUBLESHOOTING
Badger Meter Vortex flow meters are designed to ensure long term accuracy and reliability. The stainless steel body and self-
cleaning strut are specifically designed to withstand the rigors of industrial environments. As a result, periodic adjustment or
re-calibration is not normally required. Technical assistance is also available directly from Badger Meter, providing complete
re-calibration and repair service for the flow meter at a reasonable cost.
Preliminary Checks
DANGER
DO NOT OPEN ENCLOSURE IN HAZARDOUS AREAS WITH POWER APPLIED.
Is the flow meter cable installed correctly?
Is the proper power supplied to the proper terminals?
Is the flow meter wired for 2 wire 4…20 mA operation.
Is the shield tied to the shield ground terminal and only the shield ground terminal?
ADDITIONAL INSTALLATION REQUIREMENTS
Introduction
Installing a flow meter is something which requires careful consideration. It cannot just be placed in a line somewhere and
be expected to fulfill its purpose adequately. The geometry and condition of the pipe runs in the area of the installation must
be considered to ensure the best and most accurate operation of the flow-meter. This appendix provides suggestions for
optimum installations.
Most flow meter manufacturers define installation conditions in terms of upstream and downstream straight pipe lengths
from the point of installation. Unfortunately this is not the only requirement, and one needs to consider other peripheral
conditions, such as proximity and style of bends, and other equipment installed in the line. By doing this, you avoid problems
of turbulence, swirl, and sonic noise.
Turbulence
Turbulence is a disturbance of the flow caused by bends and obstructions in the flow stream (it is this phenomena which
makes the vortex flow meter work). Fortunately turbulence dies out fairly quickly, so by positioning the flow meter well away
from bends and obstructions this potential problem of measuring flow in turbulent conditions is overcome (see Figure 12).
Swirl
Unlike turbulence, swirl will not die away. Once created it will continue until dissipated on the next pipe bend in the system.
Swirl occurs after two bends, in close proximity, which are at an angle to each other. When designing an installation, keep the
flow meter out of any line which has two adjacent bends upstream (see Figure 13).
Sonic Noise
Sonic noise is created by valves (either flow control or pressure control valves) which are slightly open. Like swirl, sonic noise
will only dissipate on a bend so it is important to install flow meters out of the line of sight of valves. Sonic noise is caused by
liquid attaining sonic velocities through a slightly open valve that has a pressure difference across it. This noise travels both
up and down stream from the valve so you have to ensure that the flow meter is installed well away from the valve, preferably
around a bend (see Figure 14).
Velocity Prole
When using an RNG series insertion flow meter, it is necessary to consider the effects of the velocity profile across the pipe or
duct to optimize accuracy.
Additional Installation Requirements
Page 18 June 2018VRX-UM-00374-EN-06
In large pipes, the flow moves slowly at the pipe walls but is at maximum velocity in the center of the pipe creating a
continuously variable velocity across the pipe (see Figure 11). This velocity variation is called the velocity profile of the pipe,
and can be measured and plotted by using the insertion flow meter to measure velocities at various noted positions across
the pipe. As the maximum velocity is in the center of the pipe, it follows that if the flow meter is positioned in the center, it will
not measure average flow. The rule-of-thumb position is 25% of the way into the pipe, but the optimum position can only be
obtained by measuring the profile and working out the correct position from that.
Flow
1⁄8
¼
½
Figure 11: Typical velocity profile
Figure 12: Turbulence caused by bend or obstruction
Figure 13: Swirl caused by two bends in different planes and in close proximity to one another
Figure 14: Upstream/downstream sonic noise caused by slightly opened control valves
Additional Installation Requirements
Page 19 June 2018 VRX-UM-00374-EN-06
Flow Proling
If the flow meter is long enough to be inserted to the far side of the pipe, the flow through the pipe may be profiled at various
flow rates. The goal is to find a point in the pipe that remains a consistent percentage of the average flow rate over a wide
range of flow. A sample flow profile is shown in Table 6. In this example, the flow rate of a 48 in. pipe is measured every six
inches across the diameter of the pipe beginning and ending 3 in. from the near and far sides of the pipe. The distance in
inches from the nearside of the pipe is shown. Measurements are taken at a low, medium and high average flow. In Table 7,
the flow rate at each measurement point has been converted to a percentage of the average flow. It can be seen that point
number three (15 in. from the near side of the pipe) reads a consistent 102 percent of the average flow. The meter should be
placed in this position and the output should be divided by 1.02 to obtain the correct reading. Flow profiling will generally
improve measurement quality in insertion meter installations.
Flow
Flow Rate at Measurement Point (FPS)
1 2 3 4 5 6 7 8 Average (FPS)
Low Flow 1.90 2.00 2.04 2.06 2.06 2.04 2.00 1.90 2.0
Medium Flow 5.58 5.91 6.12 6.21 6.24 6.18 6.06 5.70 6.0
High Flow 10.92 11.70 12.24 12.48 12.60 12.48 12.18 11.40 12.0
Distance (in) 3 9 15 21 27 33 39 45
Table 6: Flow profile raw data
Flow
Flow Rate at Measurement Point (%)
1 2 3 4 5 6 7 8
Low Flow 95.0 100.0 102.0 103.0 103.0 102.0 100.0 95.0
Medium Flow 93.0 98.5 102.0 103.5 104.0 103.0 101.0 95.0
High Flow 91.0 97.5 102.0 104.0 105.0 104.0 101.5 95.0
Table 7: Flow profile normalized data
Reducing the Pipe Diameter
To decrease the variation of flow profile, the piping can be narrowed at the flow meter as shown in Figure 15. This will smooth
the flow and increase the effectiveness of flow profiling. Nearly any angle can be used on the down-stream side of the meter
to restore the original pipe diameter. However, if the angle of piping is seven degrees or less, nearly all the pressure drop
caused by the narrow pipe section will be recovered.
Figure 15: RNG insertion gas meter installed in a reduced pipe
Vortex Flow Meters, RWG/RWBG Wafer Style Flow Meters & RNG Insertion Style Flow Meters
www.badgermeter.com
Trademarks appearing in this document are the property of their respective entities. Due to continuous research, product improvements and enhancements, Badger Meter reserves
the right to change product or system specications without notice, except to the extent an outstanding contractual obligation exists. © 2018 Badger Meter, Inc. All rights reserved.
Control. Manage. Optimize.
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Vortex RWG20F15 User manual

Category
Measuring, testing & control
Type
User manual

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